That someone who added the item would most probably be a User object.  So in
MyItem model add

acts_as_activity :user

def user_id
  return the id of the user
end

I'm not sure if this will work. :D

On Thu, Jan 28, 2010 at 9:50 PM, Chris <[email protected]> wrote:

> Well, it was working for one of the models and has never worked for
> another.  The model in question is never going to have a relationship
> directly with a user, I was hoping to just track that someone added
> the item.
>
> Is there a better way to do this?
>
>
> On Jan 28, 6:48 am, Jim Ruther Nill <[email protected]> wrote:
> > You should have a user_id column for the MyItem table.
> >
> > On Thu, Jan 28, 2010 at 9:45 PM, Chris <[email protected]> wrote:
> > > When I add the acts_as_activity :user to a few of my models, after I
> > > try and create a new object, I receive the follow message (My_Item is
> > > my example model for this post)
> >
> > > NoMethodError (undefined method `user_id' for #<My_Item:0x5f4bdd4>):
> > >  vendor/plugins/community_engine/plugins/activity_tracker/lib/
> > > activity_tracker.rb:60:in `send'
> > >  vendor/plugins/community_engine/plugins/activity_tracker/lib/
> > > activity_tracker.rb:60:in `create_activity_from_self'
> > >  vendor/plugins/community_engine/plugins/activity_tracker/lib/
> > > activity_tracker.rb:25:in `acts_as_activity'
> > >  app/controllers/my_item_controller.rb:78:in `create'
> > >  app/controllers/my_item_controller.rb:77:in `create'
> > >  haml (2.2.16) lib/sass/plugin/rails.rb:19:in `process'
> > >  -e:2:in `load'
> > >  -e:2
> >
> > > Does anyone have an idea, this is happening on a few of my model?
> >
> > > I have added this to the model
> >
> > > acts_as_activity :user
> >
> > > My controller is very simple for create,
> >
> > > @myitem = MyItem.new(params[:myitem])
> >
> > > and then I save it in a respond block.
> >
> > > Thanks in advance.
> >
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